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Issue metadata

Status: Duplicate
Merged: issue 701768
Owner: ----
Closed: Mar 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.6% regression in system_health.memory_mobile at 456651:456671

Project Member Reported by nzolghadr@chromium.org, Mar 15 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=701804

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgtPn14QkM


Bot(s) for this bug's original alert(s):

android-webview-nexus5X
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Mar 16 2017

Mergedinto: 701768
Status: Duplicate (was: Untriaged)

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : Peter Marshall
  Commit : 06fef85bdd2db7418b75c4f64ac164f3fbe90e30
  Date   : Mon Mar 13 14:04:37 2017
  Subject: [builtins] Port TypedArrayConstructByArrayBuffer to CodeStubAssembler.

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : system_health.memory_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:v8:effective_size_avg/load_social/load_social_twitter
  Change       : 1.44% | 5051809.33333 -> 5124345.33333

Revision                           Result                  N
chromium@456650                    5051809 +- 76575.7      6      good
chromium@456661                    5080259 +- 102796       6      good
chromium@456662                    5054133 +- 74813.0      6      good
chromium@456662,v8@06fef85bdd      5129312 +- 1691.39      6      bad       <--
chromium@456662,v8@8e4be1a2e3      5129161 +- 2153.28      6      bad
chromium@456662,v8@c418902be4      5129500 +- 1730.8       6      bad
chromium@456662,v8@dfca935138      5129007 +- 2011.34      6      bad
chromium@456663                    5124387 +- 297.761      6      bad
chromium@456664                    5124207 +- 507.659      6      bad
chromium@456666                    5124273 +- 739.679      6      bad
chromium@456671                    5124345 +- 522.568      6      bad

Please refer to the following doc on diagnosing memory regressions:
  https://chromium.googlesource.com/chromium/src/+/master/docs/memory-infra/memory_benchmarks.md

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=load.social.twitter system_health.memory_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985041486838574640

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6160556647514112


| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Speed>Bisection.  Thank you!

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